52131403 has 4 divisors (see below), whose sum is σ = 52187400. Its totient is φ = 52075408.

The previous prime is 52131337. The next prime is 52131419. The reversal of 52131403 is 30413125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52131403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52131803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26578 + ... + 28471.

It is an arithmetic number, because the mean of its divisors is an integer number (13046850).

Almost surely, 2^52131403 is an apocalyptic number.

52131403 is a deficient number, since it is larger than the sum of its proper divisors (55997).

52131403 is an equidigital number, since it uses as much as digits as its factorization.

52131403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55996.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 52131403 is about 7220.2079609939. The cubic root of 52131403 is about 373.5652506896.

Adding to 52131403 its reverse (30413125), we get a palindrome (82544528).

The spelling of 52131403 in words is "fifty-two million, one hundred thirty-one thousand, four hundred three".